The crystal structure of Ru(2, 2'-bipyridine)2(imidazole)(His83)azurin (RuAz) has been determined to 2.3 A -resolution by X-ray crystallography. The spectroscopic and thermodynamic properties of both the native protein and [Ru(2, 2'-bipyridine)2(imidazole)2]2+ are maintained in the modified protein. Dark-green RuAz crystals grown from PEG 4000, LiNO3, CuCl2 and Tris buffer are monoclinic, belon...

Quantum chemical composite methods G3MP2B3, G3B3, G4MP2 and G4 have been used to calculate enthalpies of formation and gas phase basicities of the title compounds. Comparison of the results with the available experimental heats of formation values reveals correct agreement (to within ≈ 2 kJ/mol) with G3B3 and G4 methods. Systematic errors on the heats of formation of these aromatic molecules ar...

This short note describes the synthesis of compound 6,6′-di-(2″-thiophenol)-2,2′-bipyridine from its methyl phenyl sulfane precursor via deprotection groups. The product as well intermediate in synthetic route have been characterized by UV-Vis spectroscopy, 1H- and 13C-NMR FT-IR HR-MS analysis. work presents a rare example tetradentate chelators that bears pyridyl backbones thiophenol donors fo...

The new Cu(II) carboxylate complex, aqua(2,2'-bipyridine-κ2N,N')bis(4-methylbenzoato-κO)copper(II) [Cu(4-mba)2(bipy)(H2O)] (4-mba: 4-methylbenzoate, bipy: 2,2'-bipyridine) was synthesized, and the molecular structure of complex characterized by single crystal X-ray diffraction technique. analysis indicated that asymmetric unit comprises an independent molecule. Crystal data for [Cu(4-meb)2(2,2-...

Straightforward palladium(II) catalyzed direct cross-coupling reaction between decyl, (S)-2-methyl-butyl, and dodecyl N-substituted diketopyrrolopyrrole thiophene (DPPT), including a 3-methoxy-thiophene derivative, 6-bromo-2,2′-bipyridine afforded series of mono- bis-bipyridine substituted DPPT ligands 1–3. Complexation reactions with PtCl2(DMSO)2 provided ortho-metalated platinum(II) complexes...

Substitution of natural nucleobases in PNA oligomers with ligands is a strategy for directing metal ion incorporation to specific locations within a PNA duplex. In this study, we have synthesized PNA oligomers that contain up to three adjacent bipyridine ligands and examined the interaction with Ni2+ and Cu2+ of these oligomers and of duplexes formed from them. Variable-temperature UV spectrosc...

In the title compound, {[Mn(C(15)H(8)O(7))(C(10)H(8)N(2))(H(2)O)(3)]·C(10)H(8)N(2)·2H(2)O}(n), the bridging mode of the coordinating 4,4'-bipyridine ligands leads to the formation of polymeric zigzag chains parallel to [0-11]. The chains are separated by 4,4'-bipyridine and water solvent mol-ecules. Within a chain, the Mn(II) atom is six-coordinated by two N atoms of the bridging 4,4'-bipyridin...

The asymmetric unit of the title compound, C(10)H(8)N(2)·2C(8)H(8)O(3), contains two 2-meth-oxy-benzoic acid mol-ecules and one 4,4'-bipyridine mol-ecule. The 4,4'-bipyridine mol-ecule is disordered over two positions in a 1:1 ratio. In the crystal, the 2-meth-oxy-benzoic acid and 4,4'-bipyridine mol-ecules are connected by inter-molecular O-H⋯N hydrogen bonds. The dihedral angle between the ca...